Home / 66,288.01-91,447.17-39,415.21

Finding the Fourth Proportional to 66,288.01, 91,447.17 and 39,415.21

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Solution

The fourth proportional to 66,288.01, 91,447.17 and 39,415.21 is: 54,374.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,288.01 : 91,447.17 = 39,415.21 : x
  2. Step 2: Convert to fraction form
    66,288.01/91,447.17 = 39,415.21/x
  3. Step 3: Cross multiply
    66,288.01x = 91,447.17 × 39,415.21
  4. Step 4: Simplify right side
    66,288.01x = 3,604,409,409.46
  5. Step 5: Solve for x
    x = 3,604,409,409.46/66,288.01
  6. Step 6: Final answer
    x = 54,374.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.